Hinge for double-swing doors.



N0. 787,699. y v PATENTBD APR. 18, 1905.

. A. J. ROSENTRETER.

HINGE-FOR DOUBLE SWING DOORS.

APPLICATION FILED JUNE 23. 1903. RENEWED OCT. 12, 1904.

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UNITED STATES Patented. April is, 1905.

PATENT OFFICE.

ALBERT J. ROSENTRETER, OF BOONTON, NEW JERSEY, ASSIGNOR TO HIMSELF, GERALD HANNAY, OF EAST ORANGE, NEW JERSEY, AND THOMAS HANNAH, OF PITTSBURG, PENNSYLVANIA.

HINGE FOR DOUBLE-SWING DOORS.

SPECIFICATION forming part of Letters Patent No. 787,699, dated April 18, 1905,

Application filed June 23,1903. Renewed October 12, 1904. Serial No. 228,130.

To all whom, it may concern: 7

Be it known that L-ALBERT J. ROSENTRETER, a citizen of the United States, residing at Boonton, in the county of Morris and State of New Jersey, have invented a certain new and useful Improvement in Hinges for Double- Swing Doors,of which the following is a specification.

The invention relates to doorclosers or spring-hinges adapted to hold a door normally closed, but to permit it to be forcibly opened in either direction, and particularly to that class of closers known as floor-hinges, in which the lower and operative hinge is secured in the floor beneath the door and the upper hinge fastened to the lintel or doorframe above the door.

The object of the invention is to provide a floor-hinge or closer which shall permit the use of a long closing-spring in small compass and which shall be simple and efiicient in operation and inexpensive to manufacture' The invention consists in certain details of construction and arrangements of parts by which the above objects are attained, to be hereinafter described.

The accompanying drawings form a part of this specification and show a preferred form of the invention.

Figure 1 is an elevation, partly in vertical section, showing the upper and lower portions of a door and its frame equipped with my improved hinges. The remaining figures are on a larger scale. Fig. 2 is a top or plan view of the lower hinge or closer. Fig. 3 is a corresponding side view; and Fig. 4 is a vertical diametrical section, partly in elevation, the plane of section being taken on an irregular line. Fig. 5 is a plan or top view corresponding to Fig. 2, but with certain portions removed to show the interior of the casing. Fig. 6 is an elevation of the pintle, and Fig. 7 is a plan view of the same part. Fig. 8 is a side View, partly in vertical section, showing the upper hinge; and Fig. 9 is a plan view' Fig. 10 is a top.

of a portion of the same. view of the closing-spring alone.

casing by a screw M extending through thecover and into a boss M on the interior face of the casing-bottom. The cover has a boss M surrounding a central hole m, and both the cover and flange M have holes in the corners receiving screws M, by which the casing and its cover are secured to the floor B near the rear edge of the door, with the upper face of the cover flush therewith.

On the interior face of the bottom of the casing is a stud M cast in place or otherwise produced, serving as a step or center for a vertical pintle or arbor D, having a cavity in its lower end matching to the stud. The pin- .tle extends axially of the casing through the opening m in the cover, serving as a guide therefor, and terminates in a squared or rectangular head D, projecting above the boss M and is received in a corresponding opening in an arm or lever A, mortised in the lower edge of the door, with its lower face flush therewith and firmly secured thereto by screws.

The pintle supports the weight of the door and partially rotates with it as the door is swung in either direction.

Attached to the under face of the lintel B and preferably flush therewith is a plate N,

having adownwardly-projecting pin N in line with the axis of the pintle D,and serving, with a corresponding socket n on the upper edge of the door, as an upper hinge or guide. The socket n is produced in a casting N of L shape, having the downwardly-projecting leg N. The portion N is sunk or mortised in the top of the door, and the latter is also cut away on the rear edge to receive the leg N serving to strengthen the connection, and having a curved outer face concentric with the socket 12 and lying flush with the correspondingly-curved edge of the door.

a is a recess in the casting I 2 adjacent the innermvall of said socket n, and a passage 72.

through said inner wall of the socket affords communication between said socket and recess, the latter serving as a receptacle for fluid or semifluid lubricating material supplied as required to the socket at through the passage 11. The lubricant serves to reduce the friction of the rubbing surfaces and prevents noise due to such unlubricated contact. The recess 01. also serves to lighten the casting without impairing its strength.

The door is returned to the closed position by the force of a spring contained in the easing M acting upon lugs in the casing and its cover and fingers onthe pintle D.

G is the spring of the helical or cylindrically' coiled type, having its upper and lower coils ending in arms G G terminating in loops G encircling the pintle D in opposite directions at the upper and lower ends, respectively, and thus held and guided centrally within the casing.

The end of the wire from the upper loop G is received in the space between an upturned finger D on the laterally-extending lug D and the body of the pintle, and the end of the lower loop G? is similarly received in a corresponding space between a downwardly-projecting finger I) on a lug D near the lower end of the pintle. The lugs D I) extend parrallel with each other in the same direction, but from opposite sides of the pintle, as shown in the drawings, and the outer faces or edges of the fingers are so disposed as to hold the arms G and G of the spring separated against a slight tendency of the spring in the direction to uncoil and draw the arms closer together. This tension is that due to about a quarter of a turn of one of the arms, as indicated in Fig. 10, the full lines showing the natural position of the arms and the dotted lines indicating their normal positions in service.

On the interior bottom of the casingM is an upwardly-projecting abutment M lying ad jacent to the lug D and M. is a similar fixed abutment projecting downwardly from the interior of the cover adjacent to the lug D Each of the abutments lies close to its immediatelyadjacent arm G and G of the spring and through the latter oppose the turning of the pintle in either direction, and thus serve to hold the door normally in the closed condition.

In the act of swinging the door in one direction-for example, as indicated by the dotted lines in Fig. 5the upper arm G of the spring is forced by the finger D to move with the pintle, while the lower arm G is held against partaking in the movement by the abutment M on the bottom of the casing, and the movement therefore results in tightening or increasing the tension of the spring, which when released by releasing the door swings the latter in the direction to close until the upper arm Gr again contacts with the upper abutment M and the door comes to rest in the original or closed position. In opening the door in the opposite direction the lower arm G is compelled to move with the pintle by the finger D and the upper arm G is held against following by the upper abutment M", resulting in again tightening the spring and closing the door. In both movements one of the arms and its loop revolve with the pintle, while the other arm is held stationary, the pintle revolving in the loop thus held.

The spring is attached to the pintle by passing the head D through the upper loop G and engaging the latter in the notch or space between the pintle and the finger D with the arm (nr lying against the finger. The pintle is then firmly grasped, the spring being slightly distended, and the lower arm G forcibly turned to similarly engage the lower finger D Thus connected the tension of the spring holds these parts together sufficientl y to allow handling as a whole, and when placed in the easing and the cover applied and fastened the spring cannot be disengaged, for the reason that the fingers D D extend, respectively, close to the cover and bottom of the casing, the remaining space being too narrow to allow the arms to escape.

By connecting the spring through its loops directly to the pintle the correct central position of the spring in the casing is assured and contact between the outer surface of the spring and interior of the casing is avoided, while affording the advantage of a long spring not possible of attainment with the use of collars and other means usually employed to hold the spring.

As the spring is held by the fingers D D at a slight tension and the movement of the pintle in either direction tends to tighten the spring, there are no conditions under which the spring may unwind and escape from its attachment.

Modifications may be made in the forms and proportions in adaptingithe invention to various conditions of service, and parts of the invention may be used without the whole. The lubricating feature of the upper hinge may be omitted, or other forms may be substituted for this portion of the invention.

I claim- 1. In a door closer and hinge of the character set forth, a casing, a pintle mounted therein and arranged to turn with a door, a coiled spring in said casing attached at each end directly to said pintle by encircling the ITO latter, and means for increasing the tension of said spring by the turning of said pintle in either direction.

2. In a door closer and hinge of the character set forth a casing, a pintle mounted therein and arranged to turn with a door to which it is connected, a coiled spring in said casing having an arm at each end, the said arms extending inwardly and terminating in loops loosely encircling said pintle in opposite directions, means carried by said pintle for engaging said arms and holding said spring under tension, and abutments on said casing each arranged to oppose the movement of its adjacent arm in one direction.

3. In a door closer and hinge of the character set forth, a casing, a pintle mounted therein to turn with a door, a coiled spring in said casing having axial portions within which said pintle is received, said pintle and casing provided with means cooperating with lower coils ending in arms extending inwardly and terminating in loops loosely encircling said pintle in opposite directions with both arms normally under tension, abutments on said casing adapted to prevent the movement of the lower arm in one direction and the upper arm in the opposite direction, and means carried by said pintle for engaging said arms and holding said spring under tension and causing one or the other of said arms to move with the pintle to increase the tension, the other arm'being held against such movement by its abutment.

In testimony that I claim the invention above set forth I aflix my signature in presence of two witnesses.

ALBERT J. ROSENTRETER.

Witnesses:

RoB'r. CONNOR, CHARLES R. SEARLE. 

